DTC B1175: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Open

Clear the DTCs with the HDS.
Turn the ignition switch OFF, and then back ON (II).
Wait for 30 seconds.
Check for DTCs with the HDS.
Is DTC B1175 indicated?

YES - Go to step 5.

NO - Intermittent failure, the fuel level sensor circuit is OK at this time. Check for loose or poor connections.
Turn the ignition switch OFF.
Disconnect the fuel pump 5P connector.
Disconnect the gauge control module 36P connector and check for loose or bent terminals.
Check for continuity between gauge control module 36P connector terminal No. 32 and fuel tank unit 5P connector terminal No. 2, and between gauge control module 36P connector terminal No. 35 and fuel tank unit 5P connector terminal No. 1 respectively.

Fig 1: Measuring Voltage Between Gauge Control Module 36P Connector Terminal & Fuel Pump 5P Connector Terminal, & Gauge Control Module 36P Connector Terminal & Fuel Pump 5P Connector Terminal
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity

YES - Go to step 9.

NO - Repair an open or high resistance in the wire between the gauge control module and the fuel tank unit wires
Do FUEL GAUGE SENDING UNIT TEST .
Is the fuel gauge sending unit OK?

YES - Replace the gauge control module.

NO - Replace the fuel tank unit.